Mailbox providers

1. Open an email from the sender you want to whitelist.
   
2. Click the from/sender address in the top of the email.
   
3. Click Add to contacts or Add to safe senders' list.
   

AOL

1. Log in to your  AOL  account.
   
2. Open an email from the sender you want to whitelist.
   
3. Click the sender name and a drop down will pop up.
   
4. Click  Add Contact .
   

Gmail

1. Log in to your  Gmail  account.
   
2. Open an email from the sender you want to whitelist.
   
3. Hover over the sender's name and a window will pop up.
   
4. Click  Add to contacts  to save the sender in your contact list. Alternatively, you can add click the More button on the right side of the email and click Add to contacts.
   

Zoho Mail

1. Login to your  Zoho Mail  account.
   
2. Open the email from the specified sender.
   
3. Click on  sender name  from the email.
   
4. Click  Add to contacts  that appear.
   

Outlook

1. Log in to your  Outlook  account.
   
2. Open an email from the sender you want to whitelist.
   
3. Click  More actions  in the top right.
   
4. Click  Add to safe senders .
   

Yahoo! Mail

1. Log in to your  Yahoo! Mail  account.
   
2. Click on  Settings  on the right end of top menu.
   
3. Click  More Settings .
   
4. Click  Filters .
   
5. Click  Add new filters .
   
6. Add sender details and choose Inbox as the folder to deliver the email in.
   
7. Click  Save .
   

Orange.fr

1. Log in to your  Orange.fr  account.
   
2. Open an email from the sender you want to whitelist.
   
3. Click  add to my contacts  option in right menu.
   
4. Click  add  button.
   
5. After adding a sender address, you can view your contacts in contacts menu. You can also add a new address by clicking on  create a contact  option in  contacts  section.
   

iCloud Mail

1. Log in to your  iCloud  account.
   
2. Click  Mail  in the top menu and choose  Preferences .
   
3. Click  Rules  from the dialog box that opens.
   
4. Click  Add Rule  button on the right side of the dialog box.
   

Mail.ru

1. Log in to your  Mail.Ru  account.
   
2. Open an email from the sender you want to whitelist.
   
3. Click the  Yet  dropdown from the menu above your email.
   
4. Select  Add to .
   

Rediffmail

1. Log in to your  Rediff  account.
   
2. Open the email from a specified sender.
   
3. Click  add to address book  (which is beside the from) to save the sender in your contact list.
   

Web.de

1. Log in to your  Web.de  (Freemail) account.
   
2. Click  Settings  (Einstellungen) option in the bottom-left corner of the page.
   
3. Click  Desired List  (Erwünscht-Liste) from the list of options.
   
4. Enter the desired email address or domain.
   
5. Click  Save .
   

Comcast.net

1. Log in to your  XFINITY (Comcast.net)  account.
   
2. Open an email of the sender you want to whitelist.
   
3. Click on the sender email address from the email.
   
4. Click  Add to address book .
   

Freenet.de

1. Log in to your  Freenet.de  account.
   
2. Click  Settings  in top menu bar.
   

Mail.com

1. Log in to your  Mail.com  account.
   
2. Open an email of the sender you want to whitelist.
   
3. Click the  plus  symbol beside the  From : in the email.
   
4. Fill  details  like first name and last name.
   
5. Click  OK  button.
   

GMX mail

1. Log in to your  GMX mail  account.
   
2. Open an email of the sender you want to whitelist.
   
3. Click the  plus  symbol beside the  From : in the email.
   
4. Fill  details  like first name and last name.
   
5. Click  OK  button.
   

Yandex

1. Log in to your  Yandex mail  account.
   
2. Open an email from the sender you want to whitelist.
   
3. Click on the sender's name. A pop-up box will appear.
   
4. Click  Add to contacts .
   

BellSouth/AT&T Webmail

1. Log in to your  BellSouth/AT&T Webmail  account.
   
2. Open an email from the sender you want to whitelist.
   
3. Click the sender's name and a window will pop up.
   
4. Click  More  icon at bottom right corner to save the sender in your contact list.
   
5. Click  Add to contacts  that appear.
   

Telekom

1. Log in to your  Telekom (t-online.de)  account.
   
2. Right click the email whose sender is to be made a contact.
   
3. Select  Into the address book  option from the drop down that appears.
   

Barracuda

1. Log in to your  Barracuda  account.
   
2. Click  Email Security  in the left menu and choose  Inbound Settings .
   
3. Click  Sender Policies .
   
4. Enter the sender domain, choose  Exempt for Policy , and click  Add .
   

Trendmicro

1. Log in to your  Trendmicro  account.
   
2. Click  Inbound Preferences  from the top menu.
   
3. Click  Approved Senders  under  Sender Filter .
   

Antispamcloud.com

1. Log in to your  antispamcloud.com  account.
   
2. Click  Sender Whitelist  under  Whitelist/Blacklist  from the left side menu.